A Look At The MDS Cost On Xeon, EPYC & Xeon Total Impact Of Affected CPU Vulnerabilities

PostgreSQL is one of the server workloads being affected a lot by Spectre/Meltdown/Zombieload and especially so if disabling HT/SMT. In this particular run, the Xeon Gold 6138 server had been outperforming the EPYC 7601 2P server unmitigated but once mitigated fell behind the AMD server being tested.

Context switching takes five times longer with the first-generation Xeon Scalable server since all of these mitigations came about.